Coin-operated mechanism for gasolene-vending- machines and the like



DROP (20m HEIRIE q qnq:

A. J. LUDWlG.

COIN OPERATED MECHANISM FOR GASOLENE VENDING MACHINES AND THE LIKE.

APPLICATION FILED MAR. 24. I920.

Patented May 17, 1921.

4 '5 SHEETS SHEETI lN \[EIN (2.; 5) 0mm H. J. LUDWtG. V COIN OPERATEDMECHANISM FOR GASOLENE VENDING MACHINES AND THE LIKE.

APPLICATION FILED 11.24. 192p.

4 SHEETSSHEET 3.

1,378,590. Patented May 17,1921.

NV ENTQR 4 7 a qof xau t I v A. 1. LUBWIG. COiN OPERATED MECHANISM FORGASOLENE VENDING MACHINES AND THE LIKE.

APPUCATION FILED MAR. 24. I920.

Patented May 17,1921.

4 SHEETS--SHEET R j w v1. 1. v T .3. zg w/ H u a m u U a 0 ,H0 m H H a9. n j m a 7 a W .1 a x J n 1 Z a n ARTHUR LUDWIG, F BAXTER, IOWA.

COIN-OPERATED MECHANISM FOR GASOLENE-VENDING MACHINES AND THE LIKE.

Specification of Letters Patent.

Patented May 17, 1921.

Application filed March 24, 1920. Serial No. 368,445.

v T 0 all whom it may concern Be it known that I, ARTHUR J. LUDWIG,

V a citizen of theUnited States, and resident of Baxter, in the countyof Jasperand State of Iowa have invented a'certain new and usefulCoin-Operated Mechanism for Gasolene-Vending Machines and the like, ofwhich the following is a specification.

The object of my invention is to, provide a coin operated mechanism forgasolene vending machines and the. like, of simple,

durable and inexpensive,construction.

. More particularly it is the object of my invention to provide such acoin operated mechanism, including means for preventing any but thedesired operatlon of the mechanism at any time before orv after thedeposit of the coin.

Still a further object is to provide such a mechanism adapted to beoperated upon the deposit of coinsof different denomina tions.

Still a further object is to provide means in such a mechanism, for thereturn to the purchaser of any smaller coin which he may have depositedin the slot deslgned for larger coins.

Still. a further objectis to provide such a mechanism adapted to beselectively used and illustrated in the accompanying drawin which: Y

Figure 1 shows a front elevation of a machine embodying my invention;

Fig. 2 shows a vertical, transverse, sectional view through the'same.

.Fig; 3 shows a horizontal sectional View,

taken. 'on the line 3-3 of Fig. "2. I i

Fig. 4 shows adetail sectional view of i part ofthe locking mechanismgjFig. 5 showsa side elevation of'o'ne of the locking pawls and'part ofthe mechanism for-operating same. j Fig. 6 shows a vertical sectionalview through the pawl illustrated in Fig, 5,

Fig. 7 shows a detail sectional view of one of the slide bars.

Fig. 8 shows a vertical sectional view illustrating one of the coinslots and the mechanism adjacent thereto.

Fig. 9 shows a detail view of part of the mechanism for operating theslide bars.

Fig. 10 shows a detail sectional view of the slide bars illustrated intheir relation to the locking bar.

Fig. 11 shows a detail sectional view ofa portion of one of the coinslots.

Fig. 12 shows a sectional view of the block in which the slide bars aremounted, with the slide bars and the locking bar installed therein. i

F 13 shows a detail sectional View, taken on the line 1313 of Fig. 12,illustrating one of the slide bars in certain positions of the slidebarand the locking bar; and

Fig. 14: is a similar view showing the slide bar and the locking bar inother positions of their movement.

I In the accompanying drawings I have shown a casing, indicated by thereference character 10, supported on a suitable foundation 11. It isunderstood that the casing 10 may contain agasolene pump or the like,designed 'to be operated by means of a toothed bar 12 hereinafter morefully described, from a crank handle 13 on the outside of the casing 10.

Supported above the casing 10 is a casing 14, which contains the coinoperated mechanism.

In the front of the casing 14 are a series of coin receivingslots'15,16, 17 and 18. Leading from the'slots just described are suitable coinchutes 19, which extend inwardly and downwardly in the casing 14. Thecoin slots and chutes are ,of proper sizes to'receive coins of differentdenomina.

tions, as, for example, dimes, quarters, half dollars and dollars.

is open as at 21, to permit a smaller coin.

than the roper One, to be discharged from said chute.

Leading from the opening 21 oil each chute 19 is a chute 22 whichdischarges into a cup 22 from which the purchaser may remove the coin. V

In the upper portion of the casing 1% is mounted for rotation atransverse shaft 29. 0n the shaft 29 outside the casingid is a crankhandle 30. I

Fixed t0 the shaft 29 is a downwardly ext-ending arm 31. Pivoted to thelower end '01"- the arm 31 is a linlr The link 32 is pivoted to atransverse har Pivoted to the bar 33 are "forwardly extending plungerrods 3%, which correspond in number to the number of coin receivingopenings. The rods 34: are mounted in suitable bearings 35. On each rodSet is a collar 36. Mounted on each rod 3 1, between the col- 1ar36 andthe bearing 35,1":or instance, is a coil spring 37 arranged to normallyhold the rod 3% at its forward limit of movement for thereby holding'the shaift 29 and the crank arm 30 in starting position. Stop pins 38limit the forward movement of the plunger rods 34.

Communicating with and extending rearwardly from the er portion oi? eachcoin Jchute 19 isa cylinder 89, into which troin the rear end projects arod e0. 911 the forward endof each rod L0 is a dish 1-1, adapted passfreely downwardly into a coin re-' ceptacle 23 l1aving a sight glass 2%:in the front of the casing 1st, and having a hinged bottom 25 fixed to a'pintle26, which is rotatably mounted. Fixed to the pintle 26 an arm 27.Pivoted to the arm 27 is 28. The rod 28 is fixed to the shaft 29, thatthe rotary movement of the shaft 29 imparts swinging movement to the rod28 and tilting movement to the hinged l'iottoin 25. The rod 28 and arm27 are connectei'l together with sutlicient play to'perinit the properoperation. oil? the parts tortilting the bottom 25 downwardly when thecrank arm 30 isoperated toroperatingg the plunger rods 34:.

Suitably supportedwithin the easin is a block 4-4, in which are mountedthe slide bars 45, 46, 4L7 and 48, which are con nected with therespective rods 40. On the under. surface of the slide bars are alinednotches L9 and 50. Each notch has one inclined wall on the sid adjacenttothe movement in the casing 14:.

a rod ward movement of said bar.

Pivoted to each of the slide bars is a downwardly projecting pin 52. Astop 53 limits th swinging movement of the pin 52 in one direction.Connected with each pin is a spring 5a for normally holding the pin inengagement with its corresponding stop.

lrlounted for limited vertical sliding movement in the block td in asuitable slot 55 therein, is a bar 56 having downwardly projecting pins57 extending into coil. springs 58, on which the bar 56 rests. The bar56 is arranged tansversely with relation to the slide bars.

Slidably mounted above the bar 56 is av bar 50, which for convenience Ihave called the locking bar. In the upper surface of the locking bar 59are notches 60, which, when the parts are in normal p0sition, standbelow the respective slide bars and receivesaid slide bars.

Suitably mounted for sliding reciprocating movement, forwardly of theblock hi shaft .(l-Ll' suitably mounted in the frame members and 66 inthe casing 1%.

Mounted preferably on the upper surface off the raclr bar 61 are tnecamblocks 67, 68, 69 and 70, which normally stand adjacent to the lowerends of the respective pivoted pins 52.. The cam blocks are so arrangedthat when the slide bars are slid rearwardly in the machine, the pins 52will engage said cam blocks "for forcing the rack bar (Blister-ally forimparting limited rotation to the pinion63 and'the shaft 64:.

It may he mentioned in this connection that on the return movement ofthe respective slide bars the pins may wing ontheir pivot points againstthe tension of the springs 54 for allowing the pins to clear the camblocks.

Suitably mounted parallel with the shaft 6 1 is a shaft 71 on which is agear 72 which meshes with a gear 7 3 on the shaft 64.

, Mounted for vertical sliding movement in the machine is a toothed bar12, arranged hetween the shafts (3st and 71, as illustrated in Figs. 2and The bar 12 has teeth '74 and 75 onits opposite sides, adjacent tothe respective shafts 71 and On the shaft 64: is fixed disk 76. jacentto the disk 76 a dish 77 is rotatably mounted on the shaft 6%. The disk7 6 and 7 7 are connected by a coil'spring 78. 7 02. the disk 77 is apawl 7 9, designed in one position of the disk77 tocoaet with the teeth75 of the bar 12 for preventing'down- The normal position or" the pawl79 is extending upwardly and away from the bar 12, as illustrated bydotted lines in Fig. 2.- V

I the disk 76 is a curved slot 80, which receivesa pin: 81 extendingfrom the dish 77, for permittinglimited rotation ofthe disks 7 6 and 77with relation to each other. The spring 78 is so arranged as to tend tohold the disk 77 in such position of its rotation withrelation to thedisk 76, as to hold thefpawl 7 9 as near to the bar 12 as possible.

. On the shaft 71 is a similarly constructed pawl device designed tocoact with the teeth 74- on the other side of the bar 12. On the shaft71 is fixed a disk 82. Adjacent to the disk 82 there is loosely mountedon the shaftv 71 a disk 83, on which is the pawl 84 extendingdownwardly. The disks. 82 and 83 are connected by a spring 85,-, similarto the spring 78., 1 f

In the disk'82 isa curved slot 86, 'which receives the pin 87 on thedisk; 83 for thereby limiting the rotary movement of the disk tions oftheir vertical-adjustment by means 90 onthe shaft 71.

83 with relation to the disk;82. The spring 85' is so arranged as totendto hold the pawl '84} at the limit of its movement toward the bar 12with relation tothel disk 82. The

a f locking bar 59 has near its end a pin 88 upwardly a short'distancefrom its normal lower pOSlillOIl,'il11Cl that 1ts upward movement islimited by the shoulder 94. Adjustably mounted on the bar 91 andprojecting in different directions from said -.40

bar are stop arms 95, 96, 97 and 98, which may be secured in any of thedifferent posiof set screws 99. On the upper end of-the bar 12 is asuitable head 100, normally standing below the level of the lowermoststop bar 95. The bar91 is mounted for rotation as well as for verticalsliding movement. I Y

. Fixed on the bar z91isa wide 101, which meshes with a-segmental gear102- mounted on the vertical stub shaft 103. The.

segmentalgear 102 has an arm 104 projecting therefrom "into the paths'ofmovement of the rear'ends of the slide bars 45,46, and 47 ,asillustrated in Fig.

Pivotally mounted on a bracket 105 is arm 106, one end of which standsabove the gear 101. Pivoted tothe-other endof the arm- 106 isadownwardlyhanging arm 107. On-the shaft 71 is an arm 108, whichprojeots to position below the arm 10.7,; asshown injFigs. 3 and 'Aspring- 109 tends to i draw the arm 104 toward the slide bars 45,,

46 and 47, as shown in. Fig. 3.

@ll will 'now descri e the-practicaloperation of'my improved coinoperated mecha- 'nism for gasolene vending machines and other suchdevices.

Of course it will be understood that the bar 12 is connected with thecrank handle 13 in a suitable manner, and also with a suitable pumpwhich discharges through the flexible tube 110, or otherwise,'as may bedesired. 2 The stop arms 95, 96, 97 and 98 are adjusted at the properheights on the graduated bar 91. Normally the springs 31 hold theplunger rods 34 in their forward, positions of movement, the'springs 42hold the slide bars in their forward positions, the

spring. 109 holds the segmental gear v102, the gear 101 andthe bar .91in such positions that the upper stop bar 98 stands directly above thehead 100 on the toothedbar 12. The shafts 64 and 71 stand in thepositions shown in Fig. 4, with the pawl 84 en gaging the teeth 74, andthe pawl 7 9 free from the teeth 75.

Assuming that a coin, such, for instance, as a half dollar, is droppedinto the'slot 17, it will then slide downwardly through the proper chute19 until stopped byjthe contracted portion '20. This contracted portionwill stop the coin exactly in line with the proper cylinder 39. In theforward wall of each chute 19 is a suitable hole 111 to admit thecorresponding plunger rod 34. After the coin has been dropped into themachine, the crank may then be operated for swinging the arm. 31foractuating the bar 33 and the plunger rods 34. The disks 41 andcylinders 40. have openings 112 to permit the inoperative entrance ofthe plunger rods 34 where no coin has been deposited. V V

When the crank handle 30 is operated after the half. dollar has beendeposited, the proper plunger rodf34 will engage the coin, forcing itinto thecylinders39 and. forcing the disk 41 and the rod and thecorresponding slide bar 47 against the tension of the spring 42rearwardly in the machine; The slide bar 47 in its rearward movement, ofcourse, carriescwith it the catch pin 52 which engages the cam block 69for'forcing the bar 61 laterally toward the left. The same movementofthe slide bar 47 causes the arm 104 and the segmental gear .102 toswing on the shaft 103 for ill 113211131112 such rotation to the gear101 and the bar 91 as to bring the 817011 0211 97, which is the halfdollar stop bar, to position projecting above the head 100. The leftwardsliding movement of the bar 61 imparts limited rotation to the gear 63and the shaft 64. Such rotation is imparted to the disk 76, and throughthe pin 81 to the disk 77. for bringing the pawl 79 into engage mentwith the teeth '75 on the bar 12. The rotation of the-shaft 64. impartsrotation to the gears 73 and 72, and from thence to the shaft 71 and thedisk 82 mounted thereon. The first part of such rotation moves the disk82 from position with the pin 87 as shown in Fig. i, to position wherethe pin is in the other end of the slot 86, and during the latter partof the rotation of the shaft 71 and disk 82 the disk 83 is moved forwithdrawing the pawl 84 from engagement with the teeth 741. i

It will be noted that on account of the peculiar connection of the disks82 and 83, the pawl 84 is not moved out of engagement with the teeth ofthe bar 12 until the latter part of the operation of the machine,whereupon the bar 12 may be moved upwardly by the movement of the crank13, or otherwise, for delivering gasolene from the machine.

In the meanwhile, the machine has been locked against the return of theparts to their normal position, in the following manner:

Before starting the operation, the bar 47 stood in the position shown in14, with relation to the locking bar 59, with the rearward end of'theslot 50 above the corre-' sponding slot 60 in the bar 59. The rearwardsliding movement of the bar 4:7 carries it in the direction indicated bythe arrow-in Fig. 14, to position where the slot 19 is above the lockingbar 59, as illustrated in Fig. 13. During the rearward sliding movementof the bar 4C7 the rotation of the shaft 71 and-the consequent movementof the arm 90 impart lateral sliding movement to the right: to thelocking bar 59, for moving the slots out of register with the respectiveslide bars. The movement of the slide bar 17 depresses thelocking bar 59until the notch 49 in the slide bar 47 comes to position directly abovethe locking bar, whereupon the springs 58 force the locking bar 59upwardly into the notch d9 of said slide bar 4:7, whereupon the slidebar 47 is held against the tension of the spring 12 from returning toits original starting position. The operation' of the crank 13 serves,by mechanism whichis not here shown, but which is of ordinaryconstruction in common use, to raise the toothed bar 12. The crank 13may be operated for so raising the toothed bar 12 until the head 100 onsaid bar engages the stop bar 9?. Thereafterthere maybe $11111 cientfurther operation of themechanism to raise the bar 91 until the shoulder94 011 gages the bearing for the portion 93, where- .by-the upwardmovement of the bar 91 and bar 12 are finally'limited.

The-short upward sliding movement of the bar 91 carries upwardly thegear101, which, in such upward movement, raises the end of the arm 106adjacent to said gear and correspondingly lowers the opposite end ofsaid arm. The arm 108 by the first part of the operation of-the machineis raised upwardly until it stands adjacent to the arm 107. The upwardmovement of the gear 101 lowers the arm 107, thereby forcing clownwardlythe arm 108 and imparting rotation to the shaft 71 in a directionopposite that of its first rotation, returning the shaft 71 to itsoriginal position and moving the pawl 8-1 into engagement with the teeth74. The retation of the shaft 71 moves'the arm 90 for returning thelocking bar 59 to'its original position where the notches 60 registerwith the locking bars, whereupon the spring 109 returns the segment 102and the bar '91 to their original positions, and forces the slide bar 47forwardly in the machine for returning said parts to their originalstartin position. The rotation of the shaft 71, through the gears 72and73, returns the shaft ea to its original position, thereby throwingthe pawl 7 9 out of engagement with the teeth 75.

In this connection it will be noted that the frictional engagement ofthe pawl 79 with the teeth 7 5 will prevent the disengagement of thepawl 7 9 and teeth 75 until the disk 76 has moved a sufiicient distanceto permit the pin 81 to travel from one end to the other of the slot 80so that the pawl is not disengaged until the latter part'of theoperationof the machine during the returning of the parts to startingposition. The operation of the shaft 6 1, now being described, returnsthe bar 61 to its original position. 3

On account of the swinging mounting of the pin 52 on the bar 47, saidpin may swing upwardly against'the tension of the spring 54 forpermitting it to clear the cam block 69, but as soon as such clearing iscompleted the spring 54: returns the pin 52 to its downwardly hangingposition. The spring 42 assists in returnlng the slide'bar 47 to itsoriginal position after the locking bar 59 has slid to position forpermitting the return of the slide bar. During the return of the slidebar the coin drops through the chute 4:8 upon the swinging hinged bottom25, and there. remains in plain sight until the next operation of themachine.

'Upon the next operation of the machine the partial rotation of theshaft 29 through the means of the crank 30, actuatesthe arm 28 and thearm 27 for tilting the bottom 25 and dropping the coin thereondownwardly.

The operation of the machine after the deposit of other coins is similarto that already described. e

here the largest coin' is deposited, there 7 is no operation of thesegmental gear 102,

for the reason that the slide bar 18 clears thecndof the arm 104. Hencethere is no For smaller coins the operation is similar to thatdescribed, with the exception that will simply drop through and bedelivered into the cupmember 22 and returned to the owner. On account ofthe arrangement of the locking bar, there can beno operationofthemachine but such as to deliver the complete amount or" gasolene orthe like paid for, until another coin has been deposited. Only thecomplete operation of the machine for delivering the proper "amount ofthe 'vended commodlty Wlll serve to unlock the machine for anotheroperation. The peculiar arrangement-oi the pawls is such as to keep thebar 12 locked except for onecomplete operation for each coin. It will bereadily seen that by very simple modification the machine may be changedfor use with any vdesired coins.

The amount of the commodity to bedelivered for any particular coin maybe readily regulated by the adjustment or the stop arms 95, 96, 97 and98, which can readily be adjusted on the bar9l by means of the set screw99/ v I have shown the rear portion of the casing 14 provided with ahinged door 14; for permitting readyacccess to the mechanism within thecasing. v

Changes may be made in the construction and arrangement of the variousparts of my improved coin operated mechanism, without departing from thereal spirit and purpose of my invention, and it is 'my'intention tocover by my claims anymodified' forms ofijstructure or use of mechanicalequivalents which may be reasonably includedwithin their scope Iclaim asmy invention:

1. In a'machine of the class described, a casing, a coin chute thereinhaving a portion adapted to receive and hold a coin, a

cylinder extender from said portion, a rod in said cylinder, a slide barconnected with saidrod, a plunger adapted to engage coin in said portionfor forcing the coin into said cylinder and actuating said slide bar, alocking bar, said slide bar and locking bar having portions adapted toengage. when the said bars are in certain positions of their movement,for holding the slide bar against movement in one direction, meanstending to yieldingly move the slide bar in another direction, anactuating bar, devices 7 for locking said actuating bar against slidingmovement in either direction, means for actuating one of said devicesfrom said slide'bar, a member slidably and rotatably mounted, adjustablemeans thereon for limiting the movement of said actuating bar, means forlimiting the sliding movement of said member, and means adapted to beactuated by the movement of said member for moving the locking bar toinoperative position. v

'2. In a machine of the class described, a casing, a coin chute thereinhaving a portion adapted to receive and hold a coin, a cylinderextending from said portion, a rod in said cylinder, a slidebarconnected with said rod, a plunger adapted to engage a comin saidportion for forcing the coin into said cylinder and actuating said slidebar, a locking bar, said slide bar and locking bar having portionsadapted to engage when the said bars are in certain positions of theirmovement, for holding the slide bar against movement in one direction,means tending to yieldingly move the slide bar in another direction, anactuating bar, devices for looking said actuating bar against slidingmovement in either direction, means for actuating one of'said devicesfrom said slide bar, a member slidably and rotatably mounted, adjustablemeans thereon for limiting the movement of said actuating bar, means forlimiting the sliding movement of said memher, and means adapted to beactuated by the movement of said member for moving the locking bar toinoperative position and r'or moving the other of said devices tolocking position. a

3. In a device of the class described, a slide bar, means for actuatingsaid'slide bar through the medium of a coin, an actuating bar, means forlocking said actuating bar against movement in one direction, meansoperable from said slide bar for releasing said locking means, anda'locking bar arranged to' be moved to operative position when saidslide bar is operated, a member having a stop device thereon, saidmember being capable of limited sliding movement, and a device capableof being operated-upon the sliding movement of said member, for movingsaid locking bar to unlocking position. I

4. In a device of the class described, a casing, a series of slide barsmounted therein, means for actuating said slide bars through the mediumof coins, a locking bar,

' means for moving said locking bar to operasaid member for bringing oneof said stop devices to a definite position with reation to saidactuating bar, and means arranged to be actuated by the movement of saidmember, for returning said second means to its-starting position.

5. In a device of the class described, a casing, a series of slide barsmounted therein, means for actuating said slide bars through the mediumof coins, a locking bar, means for 'moving said locking bar to operativeposition when any one of the slide bars is actuated, an actuating bar,locking means arranged to be operated by a movement of the slide bar formovement to inoperative position with relation to said actu ating bar, amember rotatably and slidably mounted, having stop devices thereon,means whereby the movement of the slide bar actuates said member forbringing one of said stop devices to a definite position with relationto said actuating bar, and means arranged to be actuated by the movementof said member, for returning said second means to its startingposition, said second means including a locking member designed to coactwith said locking bar and to be moved to operative position when saidfirst locking device is moved to inoperative position.

6. In a device of the class described, a series of slide bars, means foractuating said slide bars through the medium of coins, an actuating bar,locking devices for holding said actuating bar against movement inopposite directions, means arranged to be actuated by movement of anyone of said slide bars for moving one of said locking devices out ofoperative position and for moving the other of said locking devices intooperative position, an adjustable memher for limiting the movementofsaid actu ating device, and means actuated by the movement of saidadjustable member, for returning said last means to normal position.

7. In a device of the class described, a series of slide bars, means foractuating said slide bars through the medium of coins, a movableactuating bar, locking devices for respectively holding said actuatingbar against movement in opposite directions, means selectively operablefrom either of said slide bars for moving one of said look ing devicesout of engagement and the other into engagement with said actuating bar,a bar mounted for rotation and for limited sliding movement, having stopdevices thereon for coacting with said actuating bar, and means arrangedto be actuated from said last bar, for reversing the movement of saidlocking devices.

8. In a device of the class described, a

V series of slide bars, means for actuating said slide bars through themedium of coins, a movable actuating bar, locking devices forrespectively holding said actuating bar against movement in oppositedirections, means selectively operable from either of said slide barsfor moving one of said looking devices out of engagement and the otherinto engagement with said actuating bar, a bar mounted for rotationand'for limited sliding movement, having stop devices thereon forcoacting with said actuating bar, and means arranged to be actuated fromsaid last bar, for reversing the movement of said locking devices, saidstop devices being adjustable.

9. In a device of the class described, a series of slide bars, means foractuating said slide bars through the medium of coins, a movableactuating bar, locking devices for respectively holding said actuatingbar against movement in opposite directions, means selectively operablefrom either of said slide bars for moving one of said loclr- 7 ingdevices out of engagement and the other into engagement with saidactuating bar, a bar mounted for rotation and for limited slidingmovement, having stop devices thereon for coacting with said actuatingbar, means arranged to be actuated from said last bar, for reversing themovement of said locking devices, and means adapted to be selectivelyoperated by said 95 slide bars for moving said last bar to bring thestops thereon selectively to position for cooperating with saidactuating bar.

10. In a device of the class described, a series of slide bars, meansfor actuating said 100 slide bars through the medium of coins, a movableactuating bar, a measuring bar mounted for rotation, stop devicesthereon projecting in different directions therefrom, and means adaptedto be operated by the 5 respective slide bars for rotating saidmeasuring bar for selectively bringing the different stops thereonintothe path of movement of said actuating bar.

11. Ina device of the class described, a 130 series of slide bars, meansfor actuating said slide bars through the medium of coins, a movableactuating bar, locking devices for respectively holding said actuatingbar against movement in opposite directions, 5 means selectivelyoperable from either of said slide bars for moving one of said lookingdevices out of en agement and the other into engagement with saidactuating bar, a bar mounted for rotation and for limited 120 slidingmovement, having stop devices thereon for coacting with said actuatingbar, means arranged to be actuated from said last bar, for reversing themovement of said locking devices, and means adapted to be 12-5selectively operated by said slide bars for moving said last bar tobring the stops thereon selectively to position for cocperating withsaid actuating bar, said stop devices being adjustable.

12. In a device of the class described, a movable actuating bar, anadjustable measuring bar, stops thereon, and a series of devicesarranged to be selectively actuated through the media of coins, forselectively bringing difierent stop devices into the path of movement ofsaid actuating bar, said actuating devices including slide bars, meansfor automatically locking the actuated slide bar against return movementWhen it is op- 10 erated, means tending to return the slide bars totheir normal positions, and means arranged to be actuated by themovement of said measuring bar for releasing said locking means.

Des Moines, Iowa, August 30, 1919.

ARTHUR J. LUDWIG.

